EntityQ2155059· pop 12· linked from 77 articlesKosmos 398Sign in to savesecond uncrewed test flight of the Soviet lunar moduleConnectionsApollo 15EntityN1EntityRussianEntitySoviet UnionConceptNASAConceptspacecraftEntityBaikonur CosmodromeEntityorbital periodEntityapsisEntitylow Earth orbitEntitylaunch vehicleEntityorbital inclinationEntityApollo 14Entityorbital eccentricityEntityepochEntityMariner 9EntityProtonEntityMars 3EntitySoyuz programmeEntitySalyut 1EntityCategories1971 in the Soviet UnionKosmos satellitesSoviet lunar programSpacecraft launched in 1971